SOLT and TRL - RF Cafe Forums

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shireesha
 Post subject: SOLT and TRL
Posted: Mon Mar 15, 2010 1:00 am 
 
Captain

Joined: Wed Jun 04, 2008 3:23 am

Posts: 11

Would it be possible to elucidate why SOLT is the preffered mode of calibration at low frequencies and TRL at higher frequencies? What is generally the more accurate mode of calibration?

 
   
 
Kirt Blattenberger
 Post subject: Re: SOLT and TRL
Unread postPosted: Mon Mar 29, 2010 9:40 pm 
 
Site Admin
 

Joined: Sun Aug 03, 2003 2:02 pm

Posts: 308

Location: Erie, PA

Greetings shireesha:

I am not an expert on the SOLT vs. TRL calibrations, but I have read that the difficulty in making a good open circuit cal standard at really high frequencies is the reason. Here is an excerpt from "Microwave Measurements," by Richard J. Collier, A. Douglas Skinner

https://books.google.com/books?id=jhzfMLh9gFoC&pg=PA238&lpg=PA238&dq=trl+solt+calibration+preferred+frequency&source=bl&ots=VU_TafJRxF&sig=nA0YLodGT7Hbr6dIOhjdzGOP1v0&hl=en&ei=ZlWxS9WnDIL78AaQye3NAQ&sa=X&oi=book_result&ct=result&resnum=8&ved=0CCEQ6AEwBzgK#v=onepage&q=trl%20solt%20calibration%20preferred%20frequency&f=false

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- Kirt Blattenberger 

RF Cafe Progenitor & Webmaster


 
   
 
ashishbondia
 Post subject: Re: SOLT and TRL
Posted: Wed Mar 31, 2010 1:32 am 
 
Captain
 

Joined: Wed Aug 16, 2006 8:20 am

Posts: 23

Location: India

If you want to use TRL at low frequencies than the size of the calibration standard (line section) will be very large....

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Ashish Bondia,

Design Engineer- RF


Posted  11/12/2012